Throat swelling (may also cause breathing difficulty)
Eyes, ears, nose, and throat
Pain
Vision loss
Gastrointestinal
Abdominal pain
Bloody stools
Burns of the esophagus (food pipe)
Vomiting, possibly with blood
Heart and blood
Collapse
Low blood pressure -- develops rapidly
Nervous system
Dizziness
Drowsiness
Euphoria ("drunk" feeling)
Headache
Loss of alertness (unconciousness)
Staggering
Weakness
Skin
Burns
Irritation
Reviewed last on: 2/15/2009
A.D.A.M. Editorial Team: David Zieve, MD, MHA, Greg Juhn, MTPW, David R. Eltz. Previously reviewed by Stephen C. Acosta, MD, Department of Emergency Medicine, Portland VA Medical Center, Portland, OR. Review provided by VeriMed Healthcare Network (5/20/2008).